/*
 * File    : JDomTreePanel.java
 * Created : 05-dec-2002 10:46
 * By      : fbusquets
 *
 * JClic - Authoring and playing system for educational activities
 *
 * Copyright (C) 2000 - 2005 Francesc Busquets & Departament
 * d'Educacio de la Generalitat de Catalunya
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details (see the LICENSE file).
 */

package edu.xtec.util;

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import java.awt.Component;
import java.awt.Dimension;
import javax.swing.event.ListSelectionListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableModel;
import edu.xtec.jclic.fileSystem.FileSystem;
import edu.xtec.util.ResourceBridge;
import edu.xtec.jclic.misc.Utils;
import java.io.FileOutputStream;

/**
 *
 * @author Francesc Busquets (fbusquets@xtec.net)
 * @version 1.0
 */
public class JDomTreePanel extends javax.swing.JPanel {
    
    ResourceBridge rb;
    TreeSelectionListener treeSelectionListener;
    ListSelectionListener listSelectionListener;
    JDomTreeObject current;
    DefaultMutableTreeNode currentNode;
    FileSystem fs;
    String fileName;
    org.jdom.Element element;
    private DefaultMutableTreeNode clip;
    private boolean cut;
    
    /** Creates new form ProjectTreePanel */
    public JDomTreePanel(org.jdom.Element element, ResourceBridge rb, FileSystem fs, String fileName) {
        this.rb=rb;
        this.fs=fs;
        this.fileName=fileName;
        this.element=element;
        initComponents();
        initMembers();
        tree.setModel(new DefaultTreeModel(JDomTreeObject.processNode(null, element, rb.getOptions())));
        tree.addTreeSelectionListener(treeSelectionListener);
        table.getSelectionModel().addListSelectionListener(listSelectionListener);
    }
    
    private void initMembers(){
        treeSelectionListener=new TreeSelectionListener() {
            public void valueChanged(TreeSelectionEvent e) {
                checkEnabled();
            }
        };
        
        listSelectionListener=new ListSelectionListener(){
            public void valueChanged(ListSelectionEvent e){
                if(!e.getValueIsAdjusting()){
                    delAttributeBtn.setEnabled(e.getFirstIndex()>=0);
                }
            }
        };
    }
    
    private void checkEnabled(){
        current=null;
        currentNode=(DefaultMutableTreeNode)tree.getLastSelectedPathComponent();
        if (currentNode == null){
            newElementBtn.setEnabled(false);
            delElementBtn.setEnabled(false);
            copyBtn.setEnabled(false);
            cutBtn.setEnabled(false);
            pasteBtn.setEnabled(false);
        } else{
            current=(JDomTreeObject)currentNode.getUserObject();
            setTableModel();
            String s=current.getElement().getText();
            boolean empty=(s==null || s.length()==0);
            boolean root=current.getElement().isRootElement();
            newElementBtn.setEnabled(empty);
            delElementBtn.setEnabled(!root);
            copyBtn.setEnabled(!root);
            cutBtn.setEnabled(!root);
            pasteBtn.setEnabled(clip!=null && empty && clip!=currentNode && !clip.isNodeChild(currentNode));
        }
    }
    
    
    private void setTableModel(){
        AbstractTableModel model=current;
        if(model==null)
            model=new DefaultTableModel();
        table.setModel(model);
        model.fireTableStructureChanged();
        newAttributeBtn.setEnabled(current!=null);
        delAttributeBtn.setEnabled(false);
    }
    
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    private void initComponents() {//GEN-BEGIN:initComponents
        javax.swing.JPanel buttonsPanel;
        javax.swing.JSplitPane split;
        javax.swing.JPanel tablePanel;
        javax.swing.JScrollPane tableScroll;
        javax.swing.JPanel treeButtonsPanel;
        javax.swing.JPanel treePanel;
        javax.swing.JScrollPane treeScroll;

        split = new javax.swing.JSplitPane();
        treePanel = new javax.swing.JPanel();
        treeScroll = new javax.swing.JScrollPane();
        tree = new javax.swing.JTree();
        treeButtonsPanel = new javax.swing.JPanel();
        newElementBtn = new javax.swing.JButton();
        delElementBtn = new javax.swing.JButton();
        copyBtn = new javax.swing.JButton();
        pasteBtn = new javax.swing.JButton();
        cutBtn = new javax.swing.JButton();
        saveBtn = new javax.swing.JButton();
        tablePanel = new javax.swing.JPanel();
        tableScroll = new javax.swing.JScrollPane();
        table = new javax.swing.JTable();
        buttonsPanel = new javax.swing.JPanel();
        newAttributeBtn = new javax.swing.JButton();
        delAttributeBtn = new javax.swing.JButton();

        setLayout(new java.awt.BorderLayout());

        treePanel.setLayout(new java.awt.BorderLayout());

        treeScroll.setMinimumSize(new java.awt.Dimension(150, 22));
        treeScroll.setViewportView(tree);

        treePanel.add(treeScroll, java.awt.BorderLayout.CENTER);

        newElementBtn.setIcon(new javax.swing.ImageIcon(getClass().getResource("/edu/xtec/resources/icons/new_element.gif")));
        newElementBtn.setToolTipText(rb.getMsg("XML_NEW_ELEMENT"));
        newElementBtn.setEnabled(false);
        newElementBtn.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                newElementBtnActionPerformed(evt);
            }
        });

        treeButtonsPanel.add(newElementBtn);

        delElementBtn.setIcon(new javax.swing.ImageIcon(getClass().getResource("/edu/xtec/resources/icons/delete.gif")));
        delElementBtn.setToolTipText(rb.getMsg("XML_DEL_ELEMENT"));
        delElementBtn.setEnabled(false);
        delElementBtn.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                delElementBtnActionPerformed(evt);
            }
        });

        treeButtonsPanel.add(delElementBtn);

        copyBtn.setIcon(new javax.swing.ImageIcon(getClass().getResource("/edu/xtec/resources/icons/copy.gif")));
        copyBtn.setToolTipText(rb.getMsg("COPY"));
        copyBtn.setEnabled(false);
        copyBtn.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                copyBtnActionPerformed(evt);
            }
        });

        treeButtonsPanel.add(copyBtn);

        pasteBtn.setIcon(new javax.swing.ImageIcon(getClass().getResource("/edu/xtec/resources/icons/paste.gif")));
        pasteBtn.setToolTipText(rb.getMsg("PASTE"));
        pasteBtn.setEnabled(false);
        pasteBtn.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                pasteBtnActionPerformed(evt);
            }
        });

        treeButtonsPanel.add(pasteBtn);

        cutBtn.setIcon(new javax.swing.ImageIcon(getClass().getResource("/edu/xtec/resources/icons/cut.gif")));
        cutBtn.setToolTipText(rb.getMsg("CUT"));
        cutBtn.setEnabled(false);
        cutBtn.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                cutBtnActionPerformed(evt);
            }
        });

        treeButtonsPanel.add(cutBtn);

        saveBtn.setIcon(new javax.swing.ImageIcon(getClass().getResource("/edu/xtec/resources/icons/file_save.gif")));
        saveBtn.setToolTipText(rb.getMsg("FILE_SAVE"));
        saveBtn.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                saveBtnActionPerformed(evt);
            }
        });

        treeButtonsPanel.add(saveBtn);

        treePanel.add(treeButtonsPanel, java.awt.BorderLayout.SOUTH);

        split.setLeftComponent(treePanel);

        tablePanel.setLayout(new java.awt.BorderLayout());

        table.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {

            },
            new String [] {

            }
        ));
        tableScroll.setViewportView(table);

        tablePanel.add(tableScroll, java.awt.BorderLayout.CENTER);

        newAttributeBtn.setIcon(new javax.swing.ImageIcon(getClass().getResource("/edu/xtec/resources/icons/new_attribute.gif")));
        newAttributeBtn.setToolTipText(rb.getMsg("XML_NEW_ATTRIBUTE"));
        newAttributeBtn.setEnabled(false);
        newAttributeBtn.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                newAttributeBtnActionPerformed(evt);
            }
        });

        buttonsPanel.add(newAttributeBtn);

        delAttributeBtn.setIcon(new javax.swing.ImageIcon(getClass().getResource("/edu/xtec/resources/icons/delete.gif")));
        delAttributeBtn.setToolTipText(rb.getMsg("XML_DEL_ATTRIBUTE"));
        delAttributeBtn.setEnabled(false);
        delAttributeBtn.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                delAttributeBtnActionPerformed(evt);
            }
        });

        buttonsPanel.add(delAttributeBtn);

        tablePanel.add(buttonsPanel, java.awt.BorderLayout.SOUTH);

        split.setRightComponent(tablePanel);

        add(split, java.awt.BorderLayout.CENTER);

    }//GEN-END:initComponents
    
    private void cutBtnActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cutBtnActionPerformed
        
        if(currentNode!=null && current!=null && !current.getElement().isRootElement()){
            clip=currentNode;
            cut=true;
            checkEnabled();
        }
        
    }//GEN-LAST:event_cutBtnActionPerformed
    
    private void pasteBtnActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_pasteBtnActionPerformed
        
        if(currentNode!=null && current!=null && clip!=null && clip!=currentNode && !clip.isNodeChild(currentNode)){
            org.jdom.Element clipElement=((JDomTreeObject)clip.getUserObject()).getElement();
            org.jdom.Element el=(org.jdom.Element)clipElement.clone();
            current.getElement().addContent(el);
            TreeNode node=JDomTreeObject.processNode(currentNode, el, rb.getOptions());
            ((DefaultTreeModel)tree.getModel()).nodeStructureChanged(currentNode);
            if(cut){
                clipElement.detach();
                ((DefaultTreeModel)tree.getModel()).removeNodeFromParent(clip);
                clip=null;
            }
            setTableModel();
            checkEnabled();
        }
        
    }//GEN-LAST:event_pasteBtnActionPerformed
    
    
    private void copyBtnActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_copyBtnActionPerformed
        
        if(currentNode!=null && current!=null && !current.getElement().isRootElement()){
            clip=currentNode;
            cut=false;
            checkEnabled();
        }
        
    }//GEN-LAST:event_copyBtnActionPerformed
    
    private void saveBtnActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_saveBtnActionPerformed
        
        if(fs==null)
            fs=new FileSystem(rb);
        
        int[] filters={Utils.JCLIC_FF};
        String result=fs.chooseFile(fileName+".jclic", true, filters, rb.getOptions(), null, this, false);
        if(result!=null){
            String fullFileName=fs.getFullFileNamePath(result);
            try{
                FileOutputStream fos=fs.createSecureFileOutputStream(fullFileName);
                JDomUtility.saveDocument(fos, new org.jdom.Document(element));
                fos.close();
                //addRecentFile(fileName);
            } catch(Exception ex){
                rb.getOptions().getMessages().showErrorWarning(this, "FILE_ERR_SAVING", fullFileName, ex, null);
            }
        }
        
    }//GEN-LAST:event_saveBtnActionPerformed
    
    private void delElementBtnActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_delElementBtnActionPerformed
        
        if(currentNode!=null && current!=null && !current.getElement().isRootElement()){
            if(clip==currentNode)
                clip=null;
            current.getElement().detach();
            ((DefaultTreeModel)tree.getModel()).removeNodeFromParent(currentNode);
            setTableModel();
        }
        
    }//GEN-LAST:event_delElementBtnActionPerformed
    
    private void newElementBtnActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_newElementBtnActionPerformed
        
        if(currentNode!=null && current!=null){
            String s=current.getElement().getText();
            if(s==null || s.length()==0){
                JTextField[] fields=new JTextField[]{new JTextField()};
                Dimension dim=new Dimension(100, 20);
                for(int i=0; i<fields.length; i++)
                    fields[i].setPreferredSize(dim);
                String[] promptKeys=new String[]{"XML_NAME"};
                if(rb.getOptions().getMessages().showInputDlg(JDomTreePanel.this, null, promptKeys, fields, "XML_NEW_ELEMENT")){
                    String elementName=fields[0].getText();
                    if(elementName!=null && elementName.length()>0){
                        org.jdom.Element el=new org.jdom.Element(elementName);
                        current.getElement().addContent(el);
                        JDomTreeObject te=new JDomTreeObject(el, rb.getOptions());
                        DefaultMutableTreeNode node=new DefaultMutableTreeNode(te);
                        ((DefaultTreeModel)tree.getModel()).insertNodeInto(node, currentNode, currentNode.getChildCount());
                        setTableModel();
                    }
                }
            }
        }
        
    }//GEN-LAST:event_newElementBtnActionPerformed
    
    private void delAttributeBtnActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_delAttributeBtnActionPerformed
        
        if(current!=null){
            int r=table.getSelectedRow();
            if(r>=0){
                if(r==0){
                    java.util.List ls=current.getElement().getContent();
                    java.util.Iterator it=ls.iterator();
                    java.util.Vector v=new java.util.Vector();
                    while(it.hasNext()){
                        Object o=it.next();
                        if(o instanceof org.jdom.Text)
                            v.add(o);
                    }
                    ls.removeAll(v);
                }
                else{
                    String s=(String)current.getValueAt(r, 0);
                    if(s!=null)
                        current.getElement().removeAttribute(s);
                }
                setTableModel();
            }
        }
        
        
    }//GEN-LAST:event_delAttributeBtnActionPerformed
    
    private void newAttributeBtnActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_newAttributeBtnActionPerformed
        
        if(current!=null){
            JTextField[] fields=new JTextField[]{new JTextField(), new JTextField()};
            Dimension dim=new Dimension(100, 20);
            for(int i=0; i<fields.length; i++)
                fields[i].setPreferredSize(dim);
            String[] promptKeys=new String[]{"XML_ATTRIBUTE", "XML_VALUE"};
            if(rb.getOptions().getMessages().showInputDlg(JDomTreePanel.this, null, promptKeys, fields, "XML_NEW_ATTRIBUTE")){
                String atrName=fields[0].getText();
                String atrValue=fields[1].getText();
                if(atrName!=null && atrValue!=null && atrName.length()>0){
                    current.getElement().setAttribute(atrName, atrValue);
                    setTableModel();
                }
            }
        }
        
    }//GEN-LAST:event_newAttributeBtnActionPerformed
    
    public static org.jdom.Element editElement(Component parent, org.jdom.Element element, ResourceBridge rb, FileSystem fs, String fileName, String titleKey){
        org.jdom.Element clon=(org.jdom.Element)element.clone();
        boolean b=rb.getOptions().getMessages().showInputDlg(parent, new JDomTreePanel(clon, rb, fs, fileName), titleKey);
        return b ? clon : null;
    }
    
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton copyBtn;
    private javax.swing.JButton cutBtn;
    private javax.swing.JButton delAttributeBtn;
    private javax.swing.JButton delElementBtn;
    private javax.swing.JButton newAttributeBtn;
    private javax.swing.JButton newElementBtn;
    private javax.swing.JButton pasteBtn;
    private javax.swing.JButton saveBtn;
    private javax.swing.JTable table;
    private javax.swing.JTree tree;
    // End of variables declaration//GEN-END:variables
    
}